A world class marathoner runs at 11.5 mph (miles per hour). Is this greater than 20 km/h?

1.000 km = 0.6214 mi

-11.5 mph is equivalent to 7.15 km/h, so it is NOT greater than 20
-11.5 mph is equivalent to 23.0 km/h, so this is greater than 20
-11.5 mph is equivalent to 18.5 km/h- therefore it is NOT greater than 20
-11.5 mph is exactly equal to 20.0 km/h

Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.